Merge pull request #552 from torstenwalter:allowGenerationOfCustomFiles

* pr/552:
  Polish "Allow generation of custom files"
  Allow generation of custom files

initializr-generator/src/main/java/io/spring/initializr/generator/ProjectGenerator.java

@@ -186,7 +186,10 @@ public class ProjectGenerator {
 	 */
 	public File generateProjectStructure(ProjectRequest request) {
 		try {
-			return doGenerateProjectStructure(request);
+			Map<String, Object> model = resolveModel(request);
+			File rootDir = generateProjectStructure(request, model);
+			publishProjectGeneratedEvent(request);
+			return rootDir;
 		}
 		catch (InitializrException ex) {
 			publishProjectFailedEvent(request, ex);
@@ -194,9 +197,12 @@ public class ProjectGenerator {
 		}
 	}
 
-	protected File doGenerateProjectStructure(ProjectRequest request) {
-		Map<String, Object> model = resolveModel(request);
-
+	/**
+	 * Generate a project structure for the specified {@link ProjectRequest} and resolved
+	 * model.
+	 */
+	protected File generateProjectStructure(ProjectRequest request,
+			Map<String, Object> model) {
 		File rootDir;
 		try {
 			rootDir = File.createTempFile("tmp", "", getTemporaryDirectory());
@@ -254,9 +260,7 @@ public class ProjectGenerator {
 			new File(dir, "src/main/resources/templates").mkdirs();
 			new File(dir, "src/main/resources/static").mkdirs();
 		}
-		publishProjectGeneratedEvent(request);
 		return rootDir;
-
 	}
 
 	/**

initializr-generator/src/test/java/io/spring/initializr/generator/AbstractProjectGeneratorTests.java

@@ -48,11 +48,19 @@ public abstract class AbstractProjectGeneratorTests {
 	@Rule
 	public final TemporaryFolder folder = new TemporaryFolder();
 
-	protected final ProjectGenerator projectGenerator = new ProjectGenerator();
+	protected final ProjectGenerator projectGenerator;
 
-	private final ApplicationEventPublisher eventPublisher = mock(
+	protected final ApplicationEventPublisher eventPublisher = mock(
 			ApplicationEventPublisher.class);
 
+	protected AbstractProjectGeneratorTests() {
+		this(new ProjectGenerator());
+	}
+
+	protected AbstractProjectGeneratorTests(ProjectGenerator projectGenerator) {
+		this.projectGenerator = projectGenerator;
+	}
+
 	@Before
 	public void setup() throws IOException {
 		Dependency web = Dependency.withId("web");
@@ -104,7 +112,7 @@ public abstract class AbstractProjectGeneratorTests {
 		verify(eventPublisher, times(1)).publishEvent(argThat(new ProjectFailedEventMatcher(request, ex)));
 	}
 
-	private static class ProjectGeneratedEventMatcher
+	protected static class ProjectGeneratedEventMatcher
 			extends ArgumentMatcher<ProjectGeneratedEvent> {
 
 		private final ProjectRequest request;

initializr-generator/src/test/java/io/spring/initializr/generator/CustomProjectGeneratorTests.java

@@ -0,0 +1,97 @@
+/*
+ * Copyright 2012-2017 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.spring.initializr.generator;
+
+import java.io.File;
+import java.util.Map;
+
+import io.spring.initializr.test.generator.ProjectAssert;
+import org.junit.Test;
+import org.mockito.InOrder;
+import org.mockito.Mockito;
+
+import org.springframework.core.io.ClassPathResource;
+
+import static org.mockito.Matchers.argThat;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.times;
+
+/**
+ * Test for custom {@link ProjectGenerator}.
+ *
+ * @author Torsten Walter
+ * @author Stephane Nicoll
+ */
+public class CustomProjectGeneratorTests extends AbstractProjectGeneratorTests {
+
+	public CustomProjectGeneratorTests() {
+		super(new MyProjectGenerator());
+	}
+
+	@Test
+	public void generateCustomResource() {
+		ProjectRequest request = createProjectRequest();
+		request.setType("maven-project");
+		request.setGroupId("com.example.custom");
+		ProjectAssert project = generateProject(request);
+		project.sourceCodeAssert("custom.txt")
+				.equalsTo(new ClassPathResource("project/custom/custom.txt"));
+	}
+
+	@Test
+	public void generateCustomResourceDisabled() {
+		ProjectRequest request = createProjectRequest();
+		request.setType("gradle-build");
+		request.setGroupId("com.example.custom");
+		ProjectAssert project = generateProject(request);
+		project.hasNoFile("custom.txt");
+	}
+
+	@Test
+	public void projectGenerationEventFiredAfterCustomization() {
+		ProjectRequest request = createProjectRequest();
+		request.setType("maven-project");
+		request.setGroupId("com.example.custom");
+		generateProject(request);
+		verifyProjectSuccessfulEventFor(request);
+
+		Runnable customFileGenerated = ((MyProjectGenerator) projectGenerator).customFileGenerated;
+		InOrder inOrder = Mockito.inOrder(eventPublisher, customFileGenerated);
+
+		inOrder.verify(customFileGenerated, times(1)).run();
+		inOrder.verify(eventPublisher, times(1)).publishEvent(
+				argThat(new ProjectGeneratedEventMatcher(request)));
+	}
+
+
+	private static class MyProjectGenerator extends ProjectGenerator {
+		private Runnable customFileGenerated = mock(Runnable.class);
+
+		@Override
+		protected File generateProjectStructure(ProjectRequest request,
+				Map<String, Object> model) {
+			model.put("customValue", 42);
+			File dir = super.generateProjectStructure(request, model);
+			if ("maven".equals(request.getBuild())) {
+				write(new File(dir, "custom.txt"), "custom.txt", model);
+				customFileGenerated.run();
+			}
+			return dir;
+		}
+	}
+
+}

initializr-generator/src/test/resources/project/custom/custom.txt

@@ -0,0 +1,4 @@
+Custom resources
+
+com.example.custom
+42

initializr-generator/src/test/resources/templates/custom.txt

@@ -0,0 +1,4 @@
+Custom resources
+
+{{groupId}}
+{{customValue}}